add toleration for Istio components. (bp #13044)

[mergify]

This is an automated backport of pull request #13044 done by Mergify.io

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[istio-testing]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[istio-testing]

Hi @mergify[bot]. Thanks for your PR.

I'm waiting for a istio member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[morvencao]

/ok-to-test

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[fpesce]

CLA: signed-off in original PR.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-1.2@afba09e). Click here to learn what that means.
The diff coverage is n/a.

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